P3: Basic PLC Program for SINUMERIK 840D sl
13.12 Basic conditions and NC VAR selector
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
917
• A *.awl file contains the names and alias names of the NC variables, as well as information about their
address parameters. Any data block generated from this file will only contain the address parameters (10
bytes per parameter).
• The generated data blocks must always be stored in the machinespecific file storage according to STEP 7
specifications.
• To ensure that the parameterization of the GET/PUT (FB 2/3) blocks with respect to NC addresses can be
implemented with symbols, the freely assignable, symbolic name of the generated data block must be
included in the STEP 7 symbol table.
Basic display/Basic menu
After the NC VAR selector has been selected (started), the basic display with all input options (upper menu bar)
appears on the screen. All other displayed windows are placed within the general window.
Figure 13-22 Basic display with basic menu
Project menu item
All operator actions associated with the project file (file of selected variables) are performed under this menu
item.
Terminating the application
The application can be terminated by selecting the "End" option under the "Project" menu item.
Creating a new project
A new project (new file for selected variables) can be set up under the "Project" menu item.
A window is displayed for the selected variables when "NEW" is selected. The file selection for the NC variable
list is then displayed after a prompt (applies only if the NC variable list is not already open).
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